Pump



Jul)" '15 I 1924. 4 1,501,435 Y N. E. BRIGHAM PUMP 0r1g:!.x ial FiledAug. 10 192a v Jwvemtoz abhor/"man Patented July 15, 1924.

NELSON E. BRTGHAM, OF SOUTH -HADLEY FALLS, MASSAOI EUSETTS, ASSIGNOR'I'O WORTHINGTON PUMP AND MACHINERY CORPORATION, OF NE H YORK, N. Y., A

CORPORATION OF VIRGINIA.

PUMP.

Original application filed August 10, 1921, Serial No. 491,098. Dividedand this application filed May 15,

- 1922. Serial No. 639,071.

To all whom it may concern:

Be it known that I, NnLsoN E. BRIGHAM,

a citizen of the United States, residing at South Hadley Falls, countyof Hampshire and State of Massachusetts, have invented certain new anduseful Improvements in Pumps, fully described and represented in thefollowing specification and the accompanying drawings, forming a part ofthe same.

This invention relates to improvementsin pumps.

It is the especial aim of the invention to provide an improved primingarrangement, so located in an outside removable cylinder head as toco-operate with a cylinder extension of a shape which will effectuallyprevent formation of air pockets and also provide an opening leadingdirectly into the pulsation chamber, whereby the latter may be easilyfilled with liquid previous to starting the pump.

For a full understanding of the invention,

a detailed description of a preferred embodiwith the accompanyingdrawing, and the novel features thereof then be specifically pointed outin the claims.

In the drawings, the figure is a partial vertical central sectionlongitudinally ofthe pump plunger. I

Referring now to the drawing, the pump construction, so far as itrelates to the present invention, consists of a cylinder casting A, pumpplunger B, suction and discharge valves C, D, respectively, dischargeair chamber E and pulsation chamber F. The plunger may be reciprocatedby mechanism such as shown in application Serial No. 491,098, filedAugust 10, 1921, ofwhich this application is a division.

The priming means and suction air chamber are all located in thecylinder head G, which is preferably and as shown formed in one piece soas to be readily removable from the pump frame A, thus permitting readyaccess to the pump valves, and also sim plifying and reducing the costof manufacture of this part of the pump.

The priming arrangement shown consists of a priming basin 1, preferablyand as shown formed on the cylinder head, such basin having an opening 2in the bottom thereof normally closed by a plug 3, which ment thereofwill now be given in connection tion chamber F, the shape and locationof r such extension being preferably as shown and with its bottomslightly inclined to faciliate flow of the priming liquid, and having aflat top so as to prevent formation of air pockets. The suction airchamber H is in communication with the atmosphere through a passage 5controlled by cock 6, the end of the passage being conveniently closedbya screw plug 7.

The operation of the device described above is as follows: Plug 3 inpriming basin 1, having been removed and the cock 6 closed, primingliquid is supplied to the basin 1 until the pulsation chamber F isfilled, which is indicated when the liquid level reaches any point inthe basin. The plug 8 is then replaced in opening 2 and the pumpstarted, and the cock 6 may be opened sufficiently to admit air afterpriming has been effected.

If desired, an air snifting nozzle, indicated generally at 8, connectingthe priming basin 1 and passage 5, may be provided, for automaticallysupplying cushioning air to the air chamber and through the pump to thedischarge air chamber, such air being automatically admitted to thesuction air chamber when the liquid level in the priming basin haslowered sufliciently to expose the nozzle orifice to the atmosphere. Thecock 6 in this operation of the device, of course, remains closed at alltimes, the liquid in the basin being drawn, during the primingoperation, into the suction air chamber and then into the pump cylinder.This air snifting feature, however, forms no part of my invention.

It will be understood that various changes may be made in the featuresof construction above described and still be within the scope of theclaims, and it will also be understood that the invention is not to beconfined to use solely with pumps of the type shown, but may be appliedto various other pump constructions and the like with equal advantage.

What is claimed is:

1. The combination with a pump cylinder, of a cylinder head removablysecured to said cylinder and forming a suction air chamber,

ice

and a priming basincon said cylinder head.

2. The combination With ap'ump cylinder, of a cylinder head forming asuction air chamber, a priming basin formed on said cylinder headhaving'an opening for admitting priming liquid to the pump cylinder, andmeans for closing said opening, said basin and closing means beingformed to avoid air pockets connecting with the cylinder.

3. The combination with a pump, of a priming basin provided with anopening for admitting priming liquid to the pump cylinder and means :forclosing said opening, said basin and closing means being formed to avoidair pockets connecting with the pump cylinder.

A. The combination .withla pumpcylinder, of a removable cylinder headforming a suction air chamber, a priming basin formed on said cylinderhead and having an opening "for admitting priming liquid to the pumpcylinder, means "for closing said opening, and means for admitting airto the suction air chamber after priming.

5. A pump having a priming basin provided With an opening for admittingpriming liquid to the pump cylinder, means for closing said opening, andmeans for admitting cushioning air to the pump :after priming.

In vtestimony whereof, I "have hereunto set my hand.

NELSON E. BRIGHAM.

